Grab your squad and get ready to party like it’s 1989. “The Taylor Swift Experience” has landed in New York City, and Swifties are about to have their wildest dreams come true.

The exhibition, which originated at the Grammy Museum in Los Angeles, is open through Feb. 19 at the South Street Seaport and includes dozens of family photos, handwritten lyrics, costumes and more that chart Tay-Tay’s rise from piano-playing wunderkind to pop princess.

“It’s about the making of a modern-day superstar,” says curator Nwaka Onwusa, who adds that Swift gave the Grammy Museum its very first acquisitions: those hand-penned pages of lyrics and a pair of cowboy boots. “When you think of all the records she’s broken, it’s amazing how much she’s accomplished in such a short period of time. She’s fierce!”

While they wait for their pop idol’s next album to drop, these Swifties dance at “The Taylor Swift Experience.”Photo: Taylor Swift Experience

The “experience” opens with the sci-fi-looking silver keyboard Swift played during her “1989” tour — an instrument the singer designed herself — before delving into her origins.

Mama Swift herself has put together a mélange of vintage goodies. There’s a home movie of 2-year-old Tay banging on the piano, as well as photos of the future pop star surrounded by stuffed animals (but, alas, no kittens) and riding a pony.

There’s even the cream-color hand-knit dress that she wore home from the hospital where she was born, in Reading, Pa. — in 1989, of course.

This section also contains the first press kit that she and her mother put together in 2004, filled with rainbow colors and flower stickers, revealing the precocious songwriter’s blond ambition.

“Even in her early years, she was putting the work in,” says Onwusa. “She and her mom went to Nashville and were pounding the pavement, knocking on doors, [trying] to get people to hear her songs.”

Photo: Splash News

But Swifties are sure to go gaga (if not Gaga) over the more glam artifacts: the glitter-spangled one-piece she wore to sing “Out of the Woods” at the Grammys in March, and the white fur-hooded shorts-suit she donned in her “Bad Blood” video. Also of note are the sweet city-skyline doodles adorning her original lyrics for “Welcome to New York,” handwritten on a worn, folded yellow notepad.

Upstairs, visitors can “shake it off” to Swift’s greatest hits on a light-up dance floor, watch high-def videos of some of her biggest performances and mix their own versions of Taylor’s hit songs. One room allows you and your squad to sing along and record a demo to “We Are Never Ever Getting Back Together.”

And just like a real-life Taylor Swift concert, there’s merch, including a “1989” blanket for $40 and a key chain for $5. But you’re going to have to get past the adoring fans to nab them.

“You should have seen all the screaming girls who came into the LA exhibition,” says Onwusa. “And adults, too.”